Improvement in dumping-wagon jacks



UNITED STATEs PATENT OEEIoE.

WILLIAM W. SAWYER, 0F BOSTON, MASSACHUSETTS.

iMPRovEMENT IN DuMPlNe-wAGoN `1Ac| s. Y

Specification forming part of Letters Patent N o. 182,331, dated September 19, 1876; application led February 28, 1876. v

To all whom it may concern:

Be it known that I, WILLIAM W. SAWYER, of Boston, in the county of Sui'olk and State of Massachusetts, have invented Improvement in Jacks for Dump-Carts, of which the following is a specification:

This invention has for its object the construction, arrangement, and location of a lifting-jack in relation to the truck and body of a cart, so that the jack may be operated from a stationary point on the side of the truck, preferably at the let't ot' the rocker.

I will explain my invention, with the aid of the accompanying drawing, forming a part of this specification, in Which- Figure l is an elevation of the front of the cart, showing the construction and location of my invention. Fig. 2 is a cross-vertical section ot' a part of the same. Fig. 3 is an enlarged section.

The screw-spindle A is supported on the ball-joint B, 4which is a part thereof, and caused to revolve in the socket B by the bevelgear C D, extended rod E, and crank F. The spindle engages with the sWiveling-nut G. which is permanently attached to the front of k the cart-body at or near the bottom, and the guide H when the body of the cart rests on the forward truck. I prefer to arrange the socket upon the rocker I at the center of its length, but it may also rest upon an extension 0f the perches. v The operating-rod E is carried to the end of the-rocker, as shown., where the guide J furnishes a bearing. By the operation of the crank the spindle is caused tov the t-ruck for lifting cart-bodies is not new,

and that the novel feature of my invention is the construction of the peculiar jack described, and its arrangement and location to ei'ect a means ot' operating from a Xed location.

I claim and desire to secure by Letters Patent ofthe United States- The combination of the screw-spindle A, provided With the ball-and-socket joint B B', and operated by the crank F, extended rod E, and bevel-gear O D, all bearing a xed relation to the truck, with the swiveling-nut G and car-body, When arranged and operated `substantially as described. A

WILLIAM W. SAWYER.

Of course the screw-spindle, 

